This phase II trial studies how well aspirin and rintatolimod with or without interferon alfa-2b work in treating patients with prostate cancer before surgery. Aspirin may help to keep the prostate cancer from coming back. Rintatolimod may stimulate the immune system and interfere with the ability of tumor cells to grow and spread. Interferon-alfa 2b may improve the body’s natural response to infections and may slow tumor growth. It is not yet known how well rintatolimod, aspirin, and interferon alfa-2b work in treating patients with prostate cancer undergoing surgery.
Additional locations may be listed on ClinicalTrials.gov for NCT03899987.
See trial information on ClinicalTrials.gov for a list of participating sites.
PRIMARY OBJECTIVE:
I. Assess the immunomodulatory effectiveness of the combination of rintatolimod and aspirin with or without recombinant interferon alfa-2b (interferon [IFN]-α2b), in participants with localized prostate cancer undergoing radical prostatectomy.
SECONDARY OBJECTIVES:
I. Assess the safety and toxicity of the treatment combinations in participants with localized prostate cancer undergoing radical prostatectomy.
II. Assess the antitumor activity between treatment arms.
EXPLORATORY OBJECTIVE:
I. Compare the resected tumor tissue specimen and surrounding tissue samples of both study arms (pre versus [vs] post-chemokine modulatory [CKM] treatment, with vs without CKM, CKM doublet vs CKM triplet) with regards to infiltrating T cell subtypes, effector T cell (Teff)/regulatory T cell (Treg) ratios, CD11b+ myeloid-derived suppressor cell (MDSC); the expression of chemokine receptors and immune checkpoint molecules on immune cells; local expression of Teff-attracting chemokines and Treg/MDSC-favoring chemokines; spatial mapping of ribonucleic acid (RNA) expressions of different T cell subtypes; RNA signatures of groups of immune-regulatory genes that are modulated by the CKM regimen.
OUTLINE: Patients are randomized to 1 of 3 arms.
ARM I: Patients receive enteric-coated (EC) aspirin orally (PO) twice daily (BID) from day -7 to 7 days prior to surgery. Patients also receive recombinant interferon alfa-2b intravenously (IV) over 30 minutes and rintatolimod IV over 2 hours daily (QD) on days 1, 2, 3, 8, 9, and 10 in the absence of disease progression or unacceptable toxicity. Patients then undergo radical prostatectomy on day 17.
ARM II: Patients receive EC aspirin PO BID from day -7 to 7 days prior to surgery and rintatolimod IV over 2 hours QD on days 1, 2, 3, 8, 9, and 10 in the absence of disease progression or unacceptable toxicity. Patients then undergo radical prostatectomy on day 17.
ARM III: Patients undergo radical prostatectomy about 4 weeks after enrollment.
All patients also undergo blood sample collection throughout the study.
After completion of study treatment, patients are followed up at 30 days.
Lead OrganizationRoswell Park Cancer Institute
Principal InvestigatorGurkamal S. Chatta